根据短文理解，完成下列各题。

D

    Mike's eleventh birthday is next Saturday. He wants to have a dinner party at his house. He asks some good friends to his party. David and Sally are two of them. Now they are discussing (讨论)what they will buy for Mike.

    David: Hey, Mike's birthday dinner is next Saturday. Let's thin k about the food.

    Sally: Sure, does he like birthday cake?

    David: No, he doesn't. He is tired of(对……厌烦)butter(奶油)a lot.

    Sally: Well, what does he like?

    David: He likes burgers and fried chicken．

    Sally: That's great. I like them too. What about vegetable salad?

    David: No, he doesn't like. But he likes fruits.

    Sally: What fruits?

    David: I think his favorite fruits are apples and bananas.

    Sally: OK. Oh, don't forget ice-cream. He likes it too.

    Sally: All right. Let's take all.

    Question: I'm 15 and I've been having trouble sleeping at night. It usually takes me 2 to 4 hours to get to sleep.{#blank#}1{#/blank#} I can't focus on my lessons at school. Please help me!

    Answer: If you are a person who doesn't regularly get a good night's sleep, you are not alone.{#blank#}2{#/blank#} Here are some tips for helping you get a good night's sleep.

    Keep regular hours

By keeping regular hours your body and mind know what is coming up and can start to prepare for you to sleep.{#blank#}3{#/blank#} If you can't go to bed at a regular time, then make sure you get up at a regular time. So after a late night you wake up tired, and it forces you to go to bed earlier.

    {#blank#}4{#/blank#}

    I know, you hear this about everything from heart health to losing weight, but exercise really does do you a world of good. However, don't do it too close to going to sleep. It is better to do it about an hour after dinner.

Relax before going to bed {#blank#}5{#/blank#} In fact, when you lie down to go to sleep, your mind is going to be thinking about the programs you have been watching. Instead, take just 20 or 30 minutes before bed to read or sit, anything that gets you to slow down and gives your mind a rest!

    Last week, I had a great vacation to Hainan with my family. We had great fun playing in different places. On Monday, the weather was sunny and hot. We went to White Beach and swam in the water. On Tuesday, it was cloudy. We visited two museums. We saw a lot of things. On Wednesday and Thursday, It was rainy and windy. We walked around the city. We bought interesting things and ate some delicious food. On Friday, the weather was cool. We climbed mountains. We were very tired but felt very happy. I really enjoyed my vacation.

    Chris is not a traditional explorer(探险者)— he usually works in an office for a large organization. Yet his job can sometimes be just as exciting and dangerous as being an explorer.

    Chris works for MSF, an organization also known as Doctors Without Borders (无国界医生). MSF sends trained doctors all over the world to help people after a war or a disaster. Chris is a doctor from France who has travelled to many places to organize programmes that help people.

At the moment, there are over 27,000 trained doctors and nurses taking part in MSF projects and tasks. The organization received the Nobel Peace Prize in 1999. All kinds of doctors can volunteer for MSF. They need to be prepared to go almost anywhere in the world and, of course, they should expect difficult conditions. Doctors with experience in tropical(热带的)diseases are especially useful because most of MSF's work is in Africa. When MSF accepts a doctor for a task, he has to go for at least six months. When doctors have completed a few tasks, they might be sent on an emergency task following a disaster, such as an earthquake.

    But why would a doctor leave a comfortable life and a good pay to join MSF? According to Chris, the experience you gain is a great help in your work. Besides, just like the explorers of the past, you need to keep an open mind and learn to get on well with the people you meet. Above all, at the end of each task, you have made a real difference to people's lives.

    Saving water is an important part of going green. As water becomes less and is polluted (污染的) more, conservation (保护) becomes more and more important. If people keep wasting water, more water needs to be treated and cleaned. This process (过程) needs quite a lot of money.

    As it is said above, cutting down on water usage is one of the most important things you can do for your local environment. That is why more green families are going blue by conserving and harvesting water.

    It may seem like a big concept (概念), but going blue starts with small changes. Something as simple as turning off the tap when you brush your teeth can save a lot of water. Wash your fruits and vegetables in a bowl instead of under a tap to save even more. Make sure that the taps are fully turned off every time you step away.

    Another way of reducing water usage is reducing your dependence on the main water supply. Rainwater harvesting can meet a lot of your home's water needs. Collecting rainwater is a great way to keep your garden green without running the sprinkler (洒水器).